Reply
 
Thread Tools Display Modes
Old 01-21-2019, 02:31 PM   #1
Junior Member
 
Join Date: Jan 2019
Posts: 17
Grey water tank monitors

We have been having one of grey water tank monitors read full even after I empty them. How can I clean out tank to see if that is problem?
__________________

Biolerdad is offline   Reply With Quote
Old 01-21-2019, 03:00 PM   #2
Senior Member
 
KeithInUpstateNY's Avatar
 
Join Date: May 2018
Posts: 190
When I got my used 2014 Avenger last year both the black tank and the gray tank sensors read full, even when they were empty. Not unusual with the black tank sensors, but I hadn't encountered the problem with the grey tank before. The previous owners had it on a seasonal lot and I suspect they just left the valves open to their sewer connection.

After boondocking for five months I have the top black tank sensor "clean" and the top two gray tank sensor reading correctly. I put TST and a healthy squirt of Dawn dishwashing detergent (to break up any grease) in both tanks after I emptied them. Some people also recommend using fabric softener, but I haven't tried it yet. I allowed the gray tank to fill until there was water in the shower pan to get a good flush. The first few times I emptied them there were globs of soap scum that looked almost like Crisco that came out. After emptying the tanks 10-12 times I'm still getting some chunks, but not as big or as many. To minimize grey tank problems in the future I use a plastic dish pan and dump the dish water in the toilet. I also switched from Dove soap to Pears, which is a glycerin based soap and produces a lot less soap scum.
__________________

KeithInUpstateNY is offline   Reply With Quote
Old 01-21-2019, 03:10 PM   #3
Junior Member
 
Join Date: Jan 2019
Posts: 17
What is tst? We are new at this.
Biolerdad is offline   Reply With Quote
Old 01-21-2019, 03:37 PM   #4
Senior Member
 
KeithInUpstateNY's Avatar
 
Join Date: May 2018
Posts: 190
Quote:
Originally Posted by Biolerdad View Post
What is tst? We are new at this.
It's a chemical that is usually used in black tanks to help break things down. But it seems to help with soap scum build up too from my experience. There are different versions, but here is the one I use:

Camco TST MAX Strength Orange Scent RV Toilet Treatment, Formaldehyde Free, Breaks Down Waste And Tissue, Septic Tank Safe, Treats 40 Gallon Holding Tanks, 32.oz (41192)

http://www.walmart.com/ip/Camco-TST-...-oz-4/14504342
KeithInUpstateNY is offline   Reply With Quote
Old 01-21-2019, 03:44 PM   #5
Senior Member
 
KeithInUpstateNY's Avatar
 
Join Date: May 2018
Posts: 190
Quote:
Originally Posted by Biolerdad View Post
What is tst? We are new at this.
And since you are new to this, we've all been there and learn A LOT in the first year, if the top sensor is dirty it will always read full, so you have to fill the tank above that sensor reading to start working your way toward more accurate readings.

To be honest, many of us don't rely on the black tank sensors, they are just too difficult to keep clean given what is going in that tank. A visual check with the toilet valve open tells when when the tank is getting full.
KeithInUpstateNY is offline   Reply With Quote
Old 01-21-2019, 03:49 PM   #6
Site Team
 
Mr. Dan's Avatar
 
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 14,117
Quote:
Originally Posted by KeithInUpstateNY View Post
And since you are new to this, we've all been there and learn A LOT in the first year, if the top sensor is dirty it will always read full, so you have to fill the tank above that sensor reading to start working your way toward more accurate readings.

To be honest, many of us don't rely on the black tank sensors, they are just too difficult to keep clean given what is going in that tank. A visual check with the toilet valve open tells when when the tank is getting full.
While the OP specifically asked about "grey water tank" sensors, I've found that my galley gray tank sensors are more often incorrect than are my black tank sensors. I've pulled a couple of the galley tank sensor buds and found them to be covered with what appears to be melted Hershey chocolate bars! I got some stuff in the mail today (recommended by members here) which I will use to try to clean off this gunk. I won't endorse the product until I try it.
__________________
SEARCH is your friend!
FR Wildcat 295RSX / GMC Sierra

Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 = 40; booked = 28
Mr. Dan is online now   Reply With Quote
Old 01-21-2019, 04:25 PM   #7
llr
Senior Member
 
Join Date: Feb 2017
Location: SW Ohio
Posts: 1,020
Quote:
Originally Posted by KeithInUpstateNY View Post
Some people also recommend using fabric softener,
FYI, Water softener like Calgon, not fabric softener

Edit: Even though it is generally a probe cleaning issue sometimes it isn't. I have had all sorts of inconsistent results since new on all 4 tanks, including the fresh water tanks. At the rally they replaced both parts of the control system and it may have helpd but still did not solve the issues.
__________________
TT 2017 Flagstaff 831CLBSS Classic Ultra lite
TV 2017 F150 6.5' bed 3.5 Eco-boost
prior TV 2014 Silverado 2500 HD
llr is offline   Reply With Quote
Old 01-21-2019, 04:38 PM   #8
Just as confused as you
 
Scrapper's Avatar
 
Join Date: Aug 2013
Location: Wilderness CG, WI
Posts: 3,900
Welcome to the world of RV lifestyle, Biolerdad. Though it doesn't answer your question of the tank sensors here is a thread on these forums that contains a lot of information you will find handy.

New to RV's helpful hints by wmtire
__________________
Richard & Jill
2014 Flagstaff 832IKBS Classic Super Lite
2018 Silverado 1500 Crew Cab Z71 4WD All Star Edition
Camping since 1989, seasonal since 2000
Car Shredder Op/Tech, Scrap Metal Recycling - retired
The Faster I Go, The Behinder I Get.
Scrapper is online now   Reply With Quote
Old 01-21-2019, 05:17 PM   #9
Junior Member
 
Join Date: Jan 2019
Posts: 17
Great. Thanks for the help!
Biolerdad is offline   Reply With Quote
Old 01-21-2019, 09:08 PM   #10
Senior Member
 
KeithInUpstateNY's Avatar
 
Join Date: May 2018
Posts: 190
Quote:
Originally Posted by llr View Post
FYI, Water softener like Calgon, not fabric softener

Edit: Even though it is generally a probe cleaning issue sometimes it isn't. I have had all sorts of inconsistent results since new on all 4 tanks, including the fresh water tanks. At the rally they replaced both parts of the control system and it may have helpd but still did not solve the issues.
I wondered about that, but the posts I saw definitely said fabric softener from the dollar store.
KeithInUpstateNY is offline   Reply With Quote
Old 01-21-2019, 09:57 PM   #11
llr
Senior Member
 
Join Date: Feb 2017
Location: SW Ohio
Posts: 1,020
I'm not an expert but I have always heard water softener and that seems to make sense to me. The laundry detergent can be anything, dollar store, generic etc
__________________
TT 2017 Flagstaff 831CLBSS Classic Ultra lite
TV 2017 F150 6.5' bed 3.5 Eco-boost
prior TV 2014 Silverado 2500 HD
llr is offline   Reply With Quote
Old 01-22-2019, 05:38 PM   #12
Senior Member
 
bedubya's Avatar
 
Join Date: Jun 2017
Posts: 453
For $238 I bought the Garnet Instruments SeeLevel II. The set I got is for Fresh, Gray, galley, Black Tanks (+Battery Voltage). Easy install and they read density through the tank walls. They have a lot of configurations depending on number of tanks, tank height, with or without pump and/or WH switches. Read 0-100%.
__________________

'17 Toyota Tacoma 4x4 TRD Sport
'17 Salem Cruise Lite 232RBXL
'08 Kawasaki Vulcan Classic 1500
Mickey the Rescue Project Schnauzer
Days Camped: 2017-39, 2018-61, 2019-64
bedubya is offline   Reply With Quote
Old 01-22-2019, 06:42 PM   #13
Senior Member
 
bedubya's Avatar
 
Join Date: Jun 2017
Posts: 453
I was able to cut off the existing sensor and keep all my existing switches. Almost perfect.
Attached Images
 
__________________

'17 Toyota Tacoma 4x4 TRD Sport
'17 Salem Cruise Lite 232RBXL
'08 Kawasaki Vulcan Classic 1500
Mickey the Rescue Project Schnauzer
Days Camped: 2017-39, 2018-61, 2019-64
bedubya is offline   Reply With Quote
Old 01-22-2019, 07:26 PM   #14
Senior Member
 
Join Date: Jun 2012
Posts: 10,907
Quote:
Originally Posted by llr View Post
I'm not an expert but I have always heard water softener and that seems to make sense to me. The laundry detergent can be anything, dollar store, generic etc
You are correct. WATER softener, not fabric softener. Fabric softener is a whole 'nother animal.
__________________
1988 Coleman Sequoia - popup (1987-2009) - outlasted 3 Dodge Grand Caravans!
2012 Roo19 - hybrid (2012-2015)

2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado 1500 Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10
rockfordroo is offline   Reply With Quote
Old 01-23-2019, 08:30 AM   #15
Member
 
Join Date: Jul 2017
Posts: 81
I'm a full-timer and my gray tank read 2/3 for months and I tried all sorts of chemicals. Finally a guy suggested I try borax so I dumped some in and about 3 weeks later my gauges work great. Must have some enzymes that take time to eat away the slug.
jdkbrooks is offline   Reply With Quote
Old 01-23-2019, 09:11 AM   #16
llr
Senior Member
 
Join Date: Feb 2017
Location: SW Ohio
Posts: 1,020
Quote:
Originally Posted by jdkbrooks View Post
I'm a full-timer and my gray tank read 2/3 for months and I tried all sorts of chemicals. Finally a guy suggested I try borax so I dumped some in and about 3 weeks later my gauges work great. Must have some enzymes that take time to eat away the slug.
Borax is a water softening agent like Calgon but may do more, I am not sure
__________________
TT 2017 Flagstaff 831CLBSS Classic Ultra lite
TV 2017 F150 6.5' bed 3.5 Eco-boost
prior TV 2014 Silverado 2500 HD
llr is offline   Reply With Quote
Old 01-25-2019, 11:11 AM   #17
Senior Member
 
Join Date: Oct 2015
Location: New Lenox, Ill. (Home of Proud Americans)
Posts: 292
Soft water

I see many posts in various forums about using Calgon or other water softening chemicals in your waste tanks. I have an "On-the Go" water softener installed in my RV which gives me softened water throughout. Would I still need to use Calgon in my waste tanks?
__________________

__________________
2015 GMC Denali 3500 4X4 Duramax
2015 Cedar Creek 36CKTS (flooded 2-20-18)
2019 Cedar Creek 36CK2 (picked up 5-1-18)
grumpyoldman is offline   Reply With Quote
Reply

Tags
grey water, tank, water, water tank

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



All times are GMT -5. The time now is 10:54 AM.


×